81102800

素因数分解:

$2^4\times 5^2\times {\mathrm{202757}}^1$

素因数の和:202775

約数の個数: 30

約数和(自身を含む): 194850438

約数和(自身を除く): 113747638

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 202757, 405514, 811028, 1013785, 1622056, 2027570, 3244112, 4055140, 5068925, 8110280, 10137850, 16220560, 20275700, 40551400, 81102800]

約数ペア:

[(1, 81102800), (2, 40551400), (4, 20275700), (5, 16220560), (8, 10137850), (10, 8110280), (16, 5068925), (20, 4055140), (25, 3244112), (40, 2027570), (50, 1622056), (80, 1013785), (100, 811028), (200, 405514), (400, 202757)]